WASHINGTON, DC (WUSA) -- All of today's hot holiday toys have something in common, science and engineering can be fun to learn.

Explore and learn about chemistry with the Thames and Kosmos Crystal Growing set. You can grow your own crystals, just make a mold, drop some crystal rocks inside, pour in the liquid mixture and watch your creations come to life. They also have the Candy Chemistry set where you can learn about the science of cooking up candies and chocolates.

The Thames and Kosmos Crystal Growing and Candy Chemistry sets are geared for ages 10 and up, and priced at $36.95.

And the Little bits Premium Electronic Building Kit makes learning about science science and engineering fun. Inside are magnetized electronic modules that let your child build circuits that actually work. There are 10 projects in a box, hundreds more online for endless hours of fun.

Consumer Reportssays the Little Bits Kit contains a lot of inspiration and rates it a "kid favorite." It's for ages 8 and up. The premium kit sells for $149. The base kit goes for $100.

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